The homework tag has no wiki summary.
0
votes
1answer
38 views
Token Ring - is a MAU required?
I'm writing a paper for school on Token Ring, but I'm having trouble discerning something. From what I understand, there are two types of Token Ring networks: wired, and star-wired.
I understand ...
1
vote
1answer
67 views
Subnetting - how to?
I can't cope with this MS 70-291 Training Kit Task:
What is the configuration error in the diagram below and WHY?
(btw: I have removed original, wrong mask which was editors error and placed big red ...
0
votes
1answer
85 views
How to write a script that does what less does?
Question: Create a script such that it is a command that has the same effect as the "less" command (implement the script by calling "less").
What I wrote:
#! /bin/bash
for index in "$@"
do
less ...
0
votes
2answers
40 views
working with graphic interface on ssh linux
We have a project involving linux programming. Unfortunalty, we have only an ssh interface, and not a convinient graphic one. What can we do? We heard that xterm can solve our problems, but we ...
3
votes
1answer
43 views
Configuring subnets quandry
I am learning the basics of subnetting however am faced with a dilemma on approaching the issue. For example I have been tasked to set up a network with 20 hosts using a Class C network addressing ...
0
votes
1answer
35 views
Adding percent value in cell to a dollar amount in Excel
I have a column of currency formatted cells (C8:C15) and a markup rate of 15% which is entered into B19. I want to have the markup rate applied to C8:C15. Starting with C8 I entered the formula =B8 + ...
1
vote
1answer
172 views
Can I temporarily affect ARP table without using `arp` command directly?
I have some knowledge about arp command under linux which can help modify the ARP table. Now I want to temporarily affect ARP table(add, delete and change) entries without the help of arp.
For ...
0
votes
1answer
80 views
Find duplicate file use cmp command
I would to write a bash script to find duplicate files but I don't want just use md5sum.
It means, in addition to use md5sum I want to check my files with cmp command.
I use the command below for ...
1
vote
1answer
246 views
What is the purpose of a routing protocol? [closed]
I'm studying for CCNA 2 exam. Here's one of the questions. I already know the answer. What I am looking for is the reason why the incorrect answers are...incorrect. =)
For example, the question is:
...
0
votes
3answers
62 views
Can't seem to change directory - “No such file or directory” error using PuTTY
I am required to use PuTTY to submit a program but I have never used it before and am having a hard time changing my directory. I am successfully connected to a Linux computer from my own but can't ...
2
votes
1answer
90 views
What privilege is required to preserve ownership of a file on copy, and how do you get it?
I have a homework question about kernel programming in Linux. The question is:
What Linux-specific privilege is required to preserve ownership of a file when it's copied, and how do you get it?
...
0
votes
2answers
245 views
subnet mask creater
Create a sub net mask for 512 subnets using 172.31.0.0
The default sub net mask for a class b network is 255.255.0.0, working through the borrowing off bits using the formula 2^n, n being the bits ...
0
votes
1answer
118 views
Mask a class D IP address
Last time I asked about masking class D ip addresses. I found that we cannot mask class D IP addresses. But, now I have another question about masking D class IP addresses:
If I want to recieve a ...
2
votes
3answers
126 views
Class D ip address
Is there mask for class D ip address? As it is for multicast, I am not sure about it.
I read somewhere that D ip addressas are 32-bit network addresses and they dont have hostID, but in the following ...
0
votes
1answer
113 views
How do I calculate how long a packet will reach its destination?
I am stuck with this homework question. I honestly have no clue what it is talking about. I been absent from class due to some personal reasons.
The question asked: You are transmitting 100 bit ...
1
vote
2answers
117 views
The CPU Utilization of a computer is 100%. Is it possible to execute a new application under the above condition?
The CPU Utilization of a computer is 100%.
Is it possible to execute a new application under the above condition?
0
votes
3answers
980 views
what is a core in terms of a processor? [closed]
Possible Duplicate:
Can someone clear up the terms Core Duo CPU, Quad Core, Dual CPU, etc.?
In a processor, what is the core? I hear the terms i3, Core 2 Duo, and Dual Core, what do they ...
0
votes
1answer
371 views
ls | cut to produce a desired output [closed]
Use ["ls -l /etc" ]and direct you output to the cut command to extract the name of the files and then sort the result. All as a single line command using "|".
Yes this is a homework question but I ...
0
votes
1answer
86 views
MS Excel pivot table
I have an Excel file: payroll.xlsx
I need to do the following, but I'm not sure how:
Create a pivot table that computes per
employee how many times s/he checked
in and her/his average amount ...
3
votes
3answers
145 views
how to create a file and delete a file using “-” symbol
How would you create and then delete a file that begins with the symbol "-"? Try it.
I can't write the command for this question and I don't why. Can anyone help me?
5
votes
2answers
234 views
How to create a file using the “#” symbol in linux?
I've tried many commands already for creating a file and deleting a file using the # symbol, but it does not work. Can anyone tell me the command to create and then delete a file that begins with the ...
1
vote
3answers
179 views
Using egrep to find lines that have 5-6 Upper Case letters. (but not more than 6)
First off, this is homework and unfortunately I have to use egrep (and not with -w or anything of the like).
I need my grep to return lines that have exactly 5 or 6 upper case letters.
Doing ...
1
vote
4answers
302 views
(bash) Grep question - how to grep for a line that has the same number you both need and don't need
This isn't at all easy to explain but easy to just show.
I have lines in a file such as:
100Dollars 3 IP
200Dollars 3 IP
300Dollars ...
1
vote
0answers
103 views
Microsoft Project 2007: entering tasks and subtasks
I'm using Microsoft Project 2007 for school. My assignment is a template from the teacher with main tasks and a preset number of days for the duration.
When I enter a subtask, put in the number of ...
2
votes
3answers
141 views
what is HTML payload?
I have to do an assignment and the following is specified:
Extract these items:
<content type="HTML">
quoted HTML payload
</content>
the extraction refers to an XML feed. What exactly ...
0
votes
1answer
122 views
Homework with allocate subnet IP address
I'm having difficulty solving a subnet allocation homework problem.
Assume that a university has an address block 128.205.224.0/19. It has to allocate addresses for 2 departments' networks, each of ...
1
vote
3answers
177 views
What file systems does Windows 2008 support?
I'm doing a schoolwork assignment and I'm currently on the question:
"What file systems does Windows 2008 support?"
Sounds easy but I dunno if it's a trap. It would be easy to say FAT32, NTFS etc. ...
-3
votes
1answer
84 views
What is Virtual Memory? [closed]
I would like to know what you guys think Virtual Memory is . Also Could you explain to me how the development of Virtual Memory has impacted operating systems and the personal computer.
0
votes
3answers
190 views
Prompting for and accepting input in Windows PowerShell
In a trivia script, how would you enter a fill in the blank question and an answer like the Seinfeld trivia game in Programming for Beginners? Please help - it is homework.
0
votes
4answers
106 views
linux grep command
Here is my question I need help with. This has to also show the line count. I can get it to show the files but not the line count.
What is the single command used to identify only the matching ...
0
votes
1answer
249 views
why is byte stuffing preferred to use with PPP
why is byte stuffing preferred to use with PPP
i read both can be used bit and byte, but book question is the above, i cant think of any reason
can you?
1
vote
1answer
151 views
What is the purpose of the network id?
I know that for addresses like e.g. 192.168.17.5 with 255.255.255.0 subnet mask, address 192.168.17.0 is the network id and 192.168.17.255 is the broadcast address and that valid hosts are from ...
1
vote
4answers
863 views
Can you have a class C IP address with a subnet mask of 255.255.0.0?
Can you have a class C IP address with a subnet mask of 255.255.0.0?
What happens when you have a setting like this?
2
votes
2answers
314 views
Finding multiple file extensions in command prompt window
I am trying to use multiple parameters to find 3 different extensions in my windows/system32 in one command: .exe, .dll and .sys
This is giving me what I want, but I can't figure out how to get all 3 ...
-3
votes
1answer
141 views
Anyone knows all 3 components of mainboard in this picture? [closed]
Can you list their names and short description on their functionality?
2
votes
5answers
370 views
What parts of the OS are the most important?
I've got an assignment to complete where I compare two operating systems of equal vintage, however my instructor hasn't really given me much of a scope for this? He has basically asked for 2000-2500 ...
0
votes
1answer
168 views
Where to place a script file so it runs on every startup [closed]
Possible Duplicate:
how to run shell (bash) script automatically at startup?
Hey there,
I need to do some more homework ;-)
The question is where do I have to place a script so it runs on ...
2
votes
4answers
1k views
tar - exclude does not work
I've supposed to archive a directory with tar and exclude some files. I have a directory $HOME/java which includes some .java and .class files. What I want to do is exclude all .class files using the ...
1
vote
2answers
144 views
maximum size filesystem on my test … approach?
Hello all I'm new at the site, and I have a question. I got this question at a test and really like to know the correct approach to solving this problem?
Here is the question.
In an indexed ...
2
votes
3answers
309 views
Work Time Start / Stop Tracking Software
Is there a software that allows you to keep track of someones working time digitally?
We are growing to an extent where we work remotely and we would like to have fixed working times.
All it should ...
2
votes
4answers
434 views
Unix Interview Question
I am giving some interviews right now and recently I was asked this questions in Interview and I was not sure of the answer, in your opinion are this kind of questions worthwhile for Interview process ...
1
vote
2answers
694 views
Linux bash: when to use egrep instead of grep?
I am preparing for a Linux terminal assessment now, I tried to Google and found most resources are referring to the basic "grep" rather than the more powerful "egrep" -- well, that is at least what ...
0
votes
1answer
955 views
Prove this Tautology (No Truth Tables) [closed]
This is for homework for my Discrete Math class.
I understand how to prove tautologies with a truth table.
I'm having trouble figuring out how to do it without though.
I found this example in our ...
0
votes
1answer
57 views
Ubuntu bash command
List in long form files in the directory /etc for the file "ETCDIR" and view them,
while the monitor sequential manner.
How can I do this with the commands tee and more?
1
vote
1answer
147 views
2
votes
0answers
57 views
clusters and tracks [closed]
Can a cluster span across multiple tracks, or does it have to remain within one track?
1
vote
2answers
105 views
0
votes
1answer
100 views
transfer time for a file
If you know the seek, rotational delay and transfer rate, how do you calculate the transfer time for a file with a given total size and cluster size?
1
vote
1answer
125 views
number of tracks
If you know the disk capacity, bytes per track, and number of surfaces, then how do you calculate the number of tracks?
2
votes
1answer
515 views
How do I calculate the bytes per track based on the transfer rate?
If you know the transfer rate, how do you calculate the bytes per track?
